Superb quality incandescent bulbs emitting infrared heat waves which are highly efficient at heating your reptile's enclosure. It's an excellent choice as a 24 hour heat source because it produces high levels of infrared heat with little visible ligh so it does not interfere with day/night cycles.
The bulb incorporates a built-in reflector to reflect more infrared heat on to your reptile and minimizes nighttime glare. These bulbs are red blown glass (not colored) and the special filament of this bulb allows the maximum amount of infrared waves to penetrate. In addition, these bulbs are highly economical.